AirHint found the following cheapest return flights from San Francisco (SFO) to San Juan (SJU) in March 2026 (see full year).

Return flights

05 Mar - 10 Mar	jetBlue
18 Mar - 24 Mar	United
05 Mar - 12 Mar	jetBlue
03 Mar - 08 Mar	Frontier Airlines
20 Mar - 29 Mar	jetBlue
24 Mar - 30 Mar	United
26 Mar - 02 Apr	United
20 Mar - 27 Mar	WestJet
20 Mar - 26 Mar	WestJet
21 Mar - 26 Mar	United
19 Mar - 26 Mar	United

Also check the deals for one-way flights from San Francisco to San Juan in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from San Francisco to San Juan in March from 301€

Return flights